Hartenstein may refer to: Places Hartenstein, Saxony, a town in Saxony, Germany Hartenstein, Bavaria, a municipality in the district of Nürnberger Land in Bavaria, Germany several castles in Germany Hartenstein, Austria, a castle in Austria , a castle in the Czech Republic Hartenstein, Slovenia, a castle in Slovenia's Kozje region Other uses Hartenstein (surname) See also Hertenstein (disambiguation)